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arXiv · 1205.4405

On conversion of luminescence into absorption and the van Roosbroeck-Shockley relation

Rupak Bhattacharya·Bipul Pal·Bhavtosh Bansal
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Abstract

The problem of conversion of experimentally measured luminescence spectrum into the absorption cross section is revisited. The common practice of using the van Roosbroeck-Shockley (or Kubo-Martin-Schwinger or Kennard-Stepanov) relation in this context is incorrect because luminescence from semiconductors is essentially all due to the spontaneous emission component of the recombination of carriers distributed far-from-equilibrium. A simple, physically consistent, and practical prescription for converting the luminescence spectra into absorption is presented and its relation to the so-called nonequilibrium generalization of the van Roosbroeck-Shockley relationship is discussed.

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Rupak Bhattacharya, Bipul Pal, Bhavtosh Bansal. 2012-05-20. On conversion of luminescence into absorption and the van Roosbroeck-Shockley relation. https://doi.org/10.1063/1.4721495

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